公共类交叉{公共静态void main（string args []）{int [] [] a = {{{1,2,3,4,5}，{6,7,8,9,10}，{11,12,12,13,14,15} int横向= 0; //横int垂直= 0; //竖for（int i = 0; i <5; i ++）{transverse = transverse+a [2] [i]; //通过下标访问} for（int j = 0; j <5; j ++）{垂直=垂直+a [2] [j]; } system.out.println（“ 5*5数组十字和为”+（横向+垂直））; }}}公共类左sum {public static void main（string args []）{int [] [] a = {{{1,2,3,4,5}，{6,7,8,9,10}，{11,12,13,14,15}，{16,17,18,18,18,19,19,19,20}，{16,17,19,20}，{21,23,23,224,23,224 int sum = 0; for（int i = 0; i <5; i ++）{sum = sum+a [i] [i]; } system.out.println（“ 5*5数组=”+sum）; }}}公共类权利{public static void main（string args []）{int [] [] a = {{{1,2,3,4,5}，{6,7,8,9,10}，{11,12,13,14,15} int sum = 0; for（int j = 4; j> = 0; j - ）{sum = sum+ a [j] [j]; } system.out.println（“ 5*5数组=”+sum）; }}}
